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<?php $arr = [',3', '', 'text', '1,2', '2']; foreach ($arr as $val) { var_dump(is_numeric(($a = explode(',',$val)[0])) ? $a : 'none'); }
Output for git.master, git.master_jit, rfc.property-hooks
string(4) "none" string(4) "none" string(4) "none" string(1) "1" string(1) "2"

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